2906623 has 2 divisors, whose sum is σ = 2906624. Its totient is φ = 2906622.

The previous prime is 2906597. The next prime is 2906627. The reversal of 2906623 is 3266092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2906623 - 2¹⁷ = 2775551 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2906591 and 2906600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2906627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453311 + 1453312.

It is an arithmetic number, because the mean of its divisors is an integer number (1453312).

2^2906623 is an apocalyptic number.

2906623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2906623 is an equidigital number, since it uses as much as digits as its factorization.

2906623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2906623 is about 1704.8821073611. The cubic root of 2906623 is about 142.7127917599.

The spelling of 2906623 in words is "two million, nine hundred six thousand, six hundred twenty-three".